Abstract: A control method and system for efficient operation of an internal combustion engine by controlling the volume of gas mixture supplied from a car-mounted fuel reformer to the internal combustion engine and the mixing ratio, as well as the volumes of air and fuel supplied to the car-mounted fuel reformer. To be more specific, efficient operation of the internal combustion engine is provided by controlling the mixing ratio of air and liquid fuel supplied to a car-mounted fuel reformer, which produces a hydrogen-containing gas from a liquid fuel through the reaction of partial oxidation, and at the same time adding a controlled volume of air to the hydrogen-containing gas discharged from the car-mounted fuel reformer and supplying the resultant mixture of the hydrogen-containing gas and air to the engine.

Abstract: Method and equipment for control of an internal combustion engine with a fuel-reforming device wherein air passing through the fuel-reforming device is mechanically controlled depending on the volume of air to be sucked into the engine without passing through the fuel-reforming device and is supplied into the air not passing through the fuel-reforming device, upstream of a throttle valve by means of an air pump; the total air volume sucked into the engine is detected; and the volume of fuel matching the total air volume is electrically controlled so that it can be supplied upstream of the fuel-reforming device into the air passing through the fuel-reforming device, and if necessary, also into the air not passing through the fuel-reforming device.

Abstract: Vehicle-mounted gaseous fuel generator consisting of a primary heat-exchange chamber holding coiled pipes for separately preheating a liquid hydrocarbon and water, a secondary heat-exchange chamber similarly equipped with coiled pipes utilizing the heat of the engine exhaust to heat and vaporize each of the fuel materials which have been preheated in the primary heat-exchange chamber, a reaction-reforming chamber composed of an outer reaction chamber for blending the hydrocarbon vaporized in the secondary heat exchange chamber with air for partial oxidation and an inner steam-reforming catalyst layer through which the combined flow of the partially oxidized gas and the vaporized water is passed to be transformed into an inflammable gas, and an apparatus for collecting the inflammable gas in a gas-collector and transmitting it via the primary heat-exchange chamber to the carburetor of the engine.

Abstract: Gas generator for mounting on an automobile, said generator comprising a float chamber for holding a liquid fuel, a gas tank to hold an inflammable gas generated through partial oxidation and steam-reforming of said liquid fuel after passage through catalyst beds, and a valve for opening and closing a duct which carries said liquid fuel from said float chamber to the carburetor in response to the pressure within said gas tank, characterized in that when starting, only the liquid fuel is supplied from said float chamber to the carburetor to drive the engine, and when said catalyst beds are heated up and the inflammable gas fills the gas tank, said inflammable gas is used as the fuel supply for the engine.

Abstract: A method of operating an internal combustion engine with a combustible gas which comprises the steps of: transforming a refined product of crude oil into a combustible gas in a gas generator by admitting said refined product into said gas generator with 60-120 % of the stoichiometric volume of oxygen needed to oxidize said refined product under the partial oxidation conditions of 400.about.800.degree.C with a space velocity ranging from 5000.about.50,000 V/VC .times. hr.sup..sup.-1 ; passing the combustible gas produced to an internal combustion engine to start and operate said internal combustion engine; and discharging the exhaust gases from said internal combustion engine.